81 citations · 237 across the 8 of their papers we have counts for
4 papers · 1 filter
Entanglement production by independent quantum channels
Örs Legeza, Florian Gebhard, Jörg Rissler
For the one-dimensional Hubbard model subject to periodic boundary conditions we construct a unitary transformation between basis states so that open boundary conditions apply for…
Tomonaga-Luttinger parameters for doped Mott insulators
Satoshi Ejima, Florian Gebhard, Satoshi Nishimoto
The Tomonaga--Luttinger parameter determines the critical behavior in quasi one-dimensional correlated electron systems, e.g., the exponent for the density of states near…
Perturbation theory for optical excitations in the one-dimensional extended Peierls--Hubbard model
Anja Grage, Florian Gebhard, Joerg Rissler
For the one-dimensional, extended Peierls--Hubbard model we calculate analytically the ground-state energy and the single-particle gap to second order in the Coulomb interaction fo…
Macroscopic Aharonov--Bohm Effect in Type-I Superconductors
Catrin Ellenberger, Florian Gebhard, Wolfgang Bestgen
In type-I superconducting cylinders bulk superconductivity is destroyed above the first critical current. Below the second critical current the `type-I mixed state' displays fluctu…